04-14-2009 02:50 AM
Setup
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Netbackup 6.0 MP4 on AIX 5.3
1 x Robot - IBM3494
10 drives - IBM3592
Drive speed native 104MB/s
Allow Multiplexing = 4
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I have 2 storage units pointing to the same robot.
This is just legacy, inherited, both storage units are configured the same.
When all drives are spinning, but not flat out, some queued jobs are waiting for storage unit 1.
I know that there is spare capacity, with multiplexing I can get 40 jobs at the same time.
If I kill a job waiting for storage unit 1 and start it manually, it is able to use a multiplex slot on storage unit 2.
I was thinking of collpsing these 2 storage units into 1, hoping to reduce the wait times.
I figured that storage unit 2 would need storage unit 2 to be finished with a drive before it could be re-allocated.
True?
Are there any other know issues with how we have it?
Does collapsing into 1 storage unit sound like a good idea?
Soon, I intend to change development & non business critical servers to a higher multiplexing factor.
I have a Priority1, P2, P3 list that the business has given me.
I will also change priorities and naming conventions.
With such high speed drives & many wintel servers that write at 5 - 10 MB/s, I figured I would need to multiplex quite high to reduce shoe shine.
I had in mind...
P1 = MPX 4
P2 = MPX 8
P3 = MPX 12
I figured i would go for 1 storage unit with MPX12, then setting MPX4, 8 or 12 at the policy level.
Does this sound like a good approach?
Or would 3 storage units be better?
thx
Rich
04-14-2009 03:29 AM
04-14-2009 06:15 AM
04-14-2009 07:17 AM
04-15-2009 03:47 AM
04-15-2009 06:38 AM
04-15-2009 06:50 AM
04-15-2009 08:46 AM